update labels count, chunks count
update labels count, chunks count

Signed-off-by: naivewong <433a0150051c535c413cb4f17a457e1f9967ca63@qq.com>

GoogleCloudPlatform/prometheus,Gouthamve/prometheus,prometheus/prometheus,prometheus/prometheus,keegancsmith/prometheus,kangwoo/prometheus,alileza/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,Gouthamve/prometheus,keegancsmith/prometheus,Gouthamve/prometheus,keegancsmith/prometheus,prometheus/prometheus,GoogleCloudPlatform/prometheus,prometheus/tsdb,prometheus/prometheus,alileza/prometheus,Gouthamve/prometheus,kangwoo/prometheus,alileza/prometheus,alileza/prometheus,keegancsmith/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,prometheus/prometheus